Electric flatiron



P. szENT yELECTRIC! FLATIRON med um e. 1922 2 Sheets-Sheet 1 @m @QM InvemLolf MQL, )1% AHS/f.

P. SZENT ELECTRIC LATIRON Filed latch 8. 1922 2 Sheets-Sheet 2 Im/famTor By%gmZM/ A Ty;

` manual adjustin means; Fi

Patented Oct. 20, 41925.

' UNITED vSTATES y 1,.'ssa1fnz PATENT OFFICE.

mn 82m, Ol CHICAGO, ILLINOIS.

nnncrmc Harmon.

Appunti mea umn s, ma. semi no. 542,191.

of which the following is a specification.`

Among the objects of my invention are to rovide an improved automatic mechanism or controlling the electric current supplied to a 4flat iron; to provide improved mechanism for automatically regulating the ilow 0f current through a flat iron; to provide improved means for turningr off and on the current supplied to a flat iron in accordance with the temperature conditions inthe iron; tov provideV automatic means of the character stated having manual means for varying to a predetermined point the temperature at which the automatic means will function; and such further objectsadvantages," and cabilities as will later moreffully appear. v y invention further resides in the combination, construction, and arra lment of parts illustrated in the accompanying drawings and, while I have shown therein a preferred embodiment of my invention, I desire the same vto be understood as illustrative' only and not as limitin said invention.

In the drawingsattac ed hereto` and forming a part hereof, Fig. 1 is a plan view of the regulator or thermostat; .Fig'. 2 is a broken transverse sect-ion taken substantially along the plane of the irregular line 22, Fig. 1; Fig-3 is a view, in perspective, of a portion of the controlling mechanism; Fig. 4 is a cross-sectional view th h the 5 isa roken elevation taken rom the r' t sidein Fig. 1; Fig. 6 is a vertical, longitudinahcentral sectional view of the electric flat ironcompletely assembled; Fig. 7 is a broken top view of the completely assembled 4flat iron with the handle removed to permit a clear view of the regulator.

Referring more in detail to. the annexed drawin numeral 1 desi ates the base portion o v a dat ironv an 2 the top late thereof, these .two parts `being hel together by ,meansl of screws 3 and 4. Between the plates 1 and 2 is the ce wire 5, by' means of which the iron is heated.

` One end of tthe resistance wire is connected .j the. bolt 15.A Placed above the Atop plate 2 is.

to aterminal 6 while the other end thereof is connected to the contact bar 14 through a reinforcing plate 7 and a cover 8, whereby there is formed a chamber 9 in the upper portion of the iron into which heat ma radiate from the heated portion thereo The parte 7 and 8 are secured to the lower ortion by means of a. nut 10, or the like, astened upon the bolt or screwv4. Secured to the base portion of the iron, withnthe i chamber 9 and in an opening `extending through plate 7 and cover 8, is a regulator thermostatically controlling the heating circuit as indicated hereinafter, this element having a scale 12 covered by a transparent face or cover plate 13, the Scale being carried by a face plate 16.

Mounted upon the face plate 16 and between it andv the cover plate 13 is a contact memy ber 17 held in place by a bolt or the like 18. This bolt is connected to one of the contacts 6 by means of a lead wire, whereby thecircuit is completed. through the iron except for connection between the contact bar 14 and the contact member 17. This connection is completed through a swingying arm 19, pivoted at 20. The member 21 which serves as a pivotal axis 'about which arm 19 turns is a bell crank whose bowed portion is received between the arms'22 of the thermostatic member 23, fitting cloilel enough between the same so that there s not be substantial play between the arts as the thermostat swings'back and orth under the influence of the heat from the heating element. The thermostatic element 23 .is carried b a block 24 securely fastened to one wall o the re lator chamber, such as the base 25 thereotf'il v As the thermostat 23 expands under the influence lof heat, the crank 21 is caused to turn and this carries the contact arm 19 out of engagement with the contact 17, thereby breaklng the circuit and interrupting the flow of current.

temperature at which the circuit is opened may be varied b adjusting the position of the contact 17 w ch is done by turnin the screw 26. It will be seen from the oregoing that as the thermostat moves under The the influence of heat, contact farm 19 is're-f--` moved from contact 17, slidin `on both it and contact bar 14, and that as t e iron cools oi after the circuit has been o ned, thermostatic bar 23 will bend in t e opposite direction and cause the arm 19 to" closethe jl 0 circuit between 14 and 17. x

It is, of course, understood that thes'pe cie description of structures set forth above`v ma be de arted from without de frohi the splirit of my invention as seit fo in. ythis claims.

Having nw described my invention, I

specification and the appended asim- 1'; In an electric flat iron having a heating unit, a circuit control means comprl a pair of spaced contacts, a circuit closer adapted to make contact with both of the aforesaid contacts, and a thermostatic means adapted to actuate the circuit closer tov open land close the circuit upon temperature tacts, a circuit control pair of s the lcircuit through the heating unit and changes in the iron.

2. An electric flat iron provided with a heating unit having a pair vof conmeans com rising a aced` switch contacts, an a thermostatic l controlled switch elementengagingbot of the switch contacts to close ing one of said contacts but dise m8 ing't e other of said contacts lto open said circuit.

- v3. In an electric flat iron having a heating unit, a circuit control means com ri a pair nof spaced contacts, a switc sli over one of the contacts and adapted, to

i,us,sia

slide over or awa from the other contact to close or open t e circuit, and 4a thermo- I0 static means to actuate the switch into circuit clos' or circuit o position.

4. In an ectric flat iron having a heating unitna circuit control means compriseither one of the aforeaai to engage or bedisfrom the other contact, a crank in said arm, a thermostatic means ing a` pair of spaced contacts, a sw' ising contact arm como@ am said crank to actuate the same and said arm- 0 control means therefor sixaced contacts, one I controlled sw' contact engagingbhe fixed contact mapted `I0 to engage or disengaged from the adjustable contact upon temperature changes in the iron. Y

In witness whereof, I hereunto subscribe my name to this specification. APETER SZEN T. 

